• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to the field of circuit breakers and describes two types of miniature circuit breakers with parameters for blocking electric frequency currents. Miniature parameter circuit breakers include trigger mechanisms, movable contacts and fixed contacts; the mobile and fixed contacts are arranged on the main circuits of the circuit breakers and the triggering mechanisms are connected to the movable contacts. The first type of circuit breaker comprises a current sensor and an electromagnet, the current sensor being used to detect the current of a main circuit; the second type comprises a discharge space and an electromagnet in parallel. Parameter miniature circuit breakers are also referred to as external SPD disconnectors that allow a lightning current to flow through a selective mode without false action and trip when the electrical frequency current passes, the fire of an SPD is prevented and the SPD is protected against overvoltage.
    公开号:FR3025050A3
    申请号:FR1557721
    申请日:2015-08-13
    公开日:2016-02-26
    发明作者:Xin Li；Fanqi Zheng；Zixiong Fan
    申请人:XIAMEN TAIHANG TECHNOLOGY CO Ltd；
    IPC主号:
    专利说明:

    [0001] TECHNICAL FIELD The invention relates to the field of circuit breakers and more particularly to a miniature circuit breaker with parameters designed to block an electric frequency current. Accidental fires due to lightning are caused when an electric frequency current is introduced into an overvoltage protection device (SPD) because of the ephemeral abnormal overvoltage of an electrical source and accidents due to poor prevention against lightning mostly occur because the SPD cuts itself off a line of protection.
    [0002] A fuse or circuit breaker is used for SPD overvoltage protection at home and elsewhere and can not meet the requirements of a fuse or circuit breaker that does not break when lightning current passes through and breaks quickly when the low electric frequency current passes at the same time.
    [0003] When an override overvoltage protection override value is selected, the condition for breaking the electrical frequency current can not be met which causes a fire; when a fast passing value of the overload protection device is selected, the requirement for a fast electrical current protection is fulfilled but a misdirection of the lightning current is also caused, a protection circuit against the Lightning is cut off and the power source loses its protection against lightning.
    [0004] In order to overcome the disadvantages of the prior art, the object of the invention is to provide a miniature circuit breaker with parameters for blocking an electric frequency current. The circuit breaker prevents false actions when the lightning current passes through 3025050 2 and acts instantly when the electric current of a power source passes through. In order to solve the technical problem of the prior art, the invention provides a miniature circuit breaker with parameters for blocking an electric frequency current. The miniature circuit breaker with parameters comprises a triggering mechanism, a movable contact and a fixed contact and furthermore comprises a current sensor and an electromagnet, the movable contact and the fixed contact being arranged on a main circuit of the miniature miniature circuit breaker with 10 parameters. current sensor detects the current of the main circuit, the electromagnet comprises an electromagnet coil and a movable iron core, the solenoid coil is connected to the current sensor, the trigger mechanism is in connection with the movable contact, when As a result of movement, the movable iron core collides with the triggering mechanism and the contact state of the movable contact and the fixed contact changes to the separation state while the triggering mechanism terminates the trigger. The tripping period of the triggering mechanism is not less than 5 ms, the duration during which the lightning current passes through the main circuit is less than the tripping period of the triggering mechanism and the duration during which the current electrical crosses the main circuit is greater than the tripping period of the trigger mechanism. The invention further provides a second type of miniature circuit breaker with parameters for blocking an electric frequency current. The miniature parameter circuit breaker comprises a trigger mechanism, a movable contact, a fixed contact and further comprises a discharge space and an electromagnet, the electromagnet comprises an electromagnet coil and a movable iron core, the movable contact, the fixed contact and the solenoid coil being arranged on a main circuit of the miniature circuit breaker with parameter, the discharge space is connected in parallel with the two ends of the solenoid coil, the triggering mechanism is in connection with the movable contact on moving, the movable iron core collides with the trigger mechanism and the contact state of the movable contact and the fixed contact goes to the separation state while the triggering mechanism terminates the trip.
    [0005] The breakdown voltage of the discharge space is less than the induced voltage generated at both ends of the solenoid coil of the lightning current. When the lightning current arrives, the induced voltage generated at both ends of the solenoid coil is greater than the breakdown voltage of the discharge space and the lightning current passes through a discharge space channel; when the electric frequency current arrives, the induced voltage generated at both ends of the solenoid coil is lower than the breaking voltage of the discharge space, the discharge space is not conductive and the current goes to through the solenoid coil 15 to act. The electromagnets in both types of miniature parameter circuit breakers further include return springs for returning the moving iron cores to the positions where the moving iron cores were before acting after the moving iron cores act. The two parameter miniature circuit breakers further include operational mechanisms, incoming wire terminals, flexible copper wires, outgoing wire terminals, start keys and arc extinguishing devices, movable contacts. being connected to the outgoing wire terminals through the flexible copper wires, the start keys are in connection with the triggering mechanisms through the operative mechanisms and the arc extinguishing devices include drop sheets. arc to extinguish arcs generated between the fixed contacts and the movable contacts.
    [0006] The principle of the first type of miniature circuit breaker parameter for blocking an electric frequency current of the invention is that the characteristic of the short duration of the lightning current is used to selectively pass the lightning current and block the current of the lightning current. electrical frequency and the like 3025050 4 with the duration longer than the tripping period of the triggering mechanism. The principle of the second type of miniature circuit breaker parameter for blocking an electric frequency current of the invention is that the rates of change of the lightning current and the electric frequency current differ in time and therefore the induced voltage generated at both ends of the solenoid coil is different; the lightning current passes selectively by breaking the discharge space and the electric frequency current and the like which can not generate voltage is blocked by reaching a breaking value at both ends of an inductor. By adopting the technical plan, the miniature circuit breakers with parameters have the following advantages of passing the lightning current regularly and making the lightning protection effective and constant; blocking the electrical frequency current and preventing the SPD from catching fire. Figure 1 shows a schematic of the miniature circuit breaker with parameters for blocking the start-up electrical frequency current provided by an embodiment 1 of the invention. Fig. 2 shows a cross-section of the miniature circuit breaker with parameters for blocking the electric frequency current at the start-up state provided by the embodiment 1 of the invention.
    [0007] FIG. 3 is a schematic diagram of the miniature circuit breaker with parameters for blocking the electric frequency current at the start-up state provided by an embodiment 1 of the invention. Fig. 4 shows a cross-section of the miniature circuit breaker with parameters for blocking the electrical frequency current 30 in the start-up state provided by the embodiment 1 of the invention. Fig. 5 shows a diagram of a control arrangement provided by Embodiment 1 of the invention.
    [0008] FIG. 6 is a schematic diagram of the miniature circuit breaker with parameters for blocking the electrical frequency current at the start-up state provided by an embodiment 2 of the invention. Fig. 7 shows a cross-section of the miniature circuit breaker with parameters for blocking the electrical frequency current at the start-up state provided by Embodiment 2 of the invention. Figure 8 shows a schematic of the miniature circuit breaker with parameters for blocking the start-up electrical frequency current provided by an embodiment 2 of the invention. Fig. 9 shows a cross-section of the miniature circuit breaker with parameters for blocking the electric frequency current at the start-up state provided by Embodiment 2 of the invention.
    [0009] Fig. 10 is a diagram of a control arrangement provided by Embodiment 2 of the invention. The technical plan of the embodiments of the invention is clearly and fully described as follows in conjunction with the drawings of the embodiments of the invention.
    [0010] Embodiment 1: Figs. 1 to 4 show schematics of a first type of miniature circuit breaker with parameters for blocking an electric frequency current provided by the embodiment of the invention. The drawings clearly show that the miniature parameter circuit breaker comprises a trigger mechanism 5, a movable contact 8 and a fixed contact 10 and further comprises a current sensor 11 and an electromagnet 2, the movable contact 8 and the fixed contact 10 being arranged on a main circuit of the miniature circuit-breaker with parameters, the electromagnet 2 comprises an electromagnet coil and a movable iron core, the solenoid coil 30 is connected to the current sensor 11, the triggering mechanism 5 is connected with the movable contact 8, during a displacement, the movable iron core collides with the trigger mechanism 5 and the contact state of the movable contact 8 and the fixed contact 3025050 6 goes to the separation state while the mechanism trigger 5 completes the trigger. In the embodiment, the fixed contact 10 is connected to the sensor 11 and the triggering mechanism 5 is in connection with the movable contact 8, when the movable iron core encounters the trigger mechanism 5, the movable contact 8 and the contact fixed 10 are separated to disconnect a circuit in pieces while the trigger mechanism 5 completes the trip, otherwise the movable contact 8 and the fixed contact 10 are in contact to connect the circuit.
    [0011] The triggering period of the triggering mechanism 5 is 5 ms. Currently, lightning detection data indicate that from the beginning to the end of the lightning and from the first lightning to the multiple counterattacks, the duration of each lightning current pulse is level of the 15 microsecond. Therefore, the duration during which the lightning current passes through the main circuit must be less than the tripping period of the tripping mechanism 5 and the duration of the electric frequency current in the main circuit is greater than the tripping period of the tripping mechanism. trigger mechanism 5, ie greater than 5 ms. The electromagnet 2 further comprises a movable iron core and a return spring, the return spring biasing the movable iron core to the position where the movable iron core was located before acting after the moving iron core. act and the solenoid coil 25 is wound around the movable iron core. The miniature circuit breaker with parameters for blocking the electric frequency current further comprises an operating mechanism 4, an incoming wire terminal 1, a flexible copper wire 7, an outgoing wire terminal 6, a start key 3 and a With the arc extinguishing device 8, the movable contact 8 being connected to the outgoing wire terminal 6 via the flexible copper wire 7, the start key 3 is connected to the triggering mechanism 5 via of the operating mechanism 4 and the circuit can be reconnected by activating the start key 3 after the blocking of the electric frequency current. Preferably, the arc extinguishing device is arranged at the position near the movable contact 8 and the fixed contact 10 and the arc extinguishing device comprises an arc drop sheet 9 for extinguishing a generated arc between the fixed contact 10 and the movable contact 8. Embodiment 2: Figures 6 to 9 show diagrams of a second type of miniature circuit breaker with parameters for blocking an electric frequency current provided by the embodiment of the invention. 'invention. The drawings clearly show that the miniature parameter circuit breaker comprises a trigger mechanism 5, a movable contact 8 and a fixed contact 10 and further comprises a discharge space 12 and an electromagnet 2, the electromagnet 2 comprising an electromagnet coil and a movable iron core, the movable contact 8, the fixed contact 10 and the solenoid coil 15 being arranged on a main circuit of the miniature circuit-breaker with parameters, the discharge space 12 being connected in parallel at both ends of the solenoid coil, the triggering mechanism 5 is connected to the movable contact 8, during a displacement, the movable iron core collides with the trigger mechanism 5 and the contact state of the movable contact 8 and the fixed contact 10 goes to the separation state while the trigger mechanism 5 completes the trigger. According to the embodiment, the fixed contact 10 is connected to the discharge space 12, the fixed contact 10 can also be connected to the electromagnet 2, and the triggering mechanism 5 is in connection with the movable contact 8; when the moving iron core encounters the trigger mechanism 5, the movable contact 8 and the fixed contact 10 are separated to disconnect a circuit in pieces while the triggering mechanism 5 completes the trigger, otherwise, the movable contact 8 and the contact fixed 10 are in contact to connect the circuit. The breakdown voltage of the discharge space 12 is less than the induced voltage generated at both ends of the solenoid coil of the lightning current. When the lightning current 3025050 8 arrives, the induced voltage generated by the solenoid coil is greater than the breakdown voltage of the discharge space 12 and therefore the discharge space 12 is broken in a conductive mode and discharge of electricity; the voltage of the arc at both ends of the discharge space 12 is only 10 to 20 V, the voltage is low, its duration is a few microseconds and it can not cause the action of the moving iron core the electromagnet and the lightning current arrives at the other end of the discharge space 12; the rate of change of the electric frequency current is at the level of milliseconds; when the electric frequency current arrives, the induced voltage generated at both ends of the electromagnetic coil of the electric frequency current is lower than the breaking voltage of the discharge space 12, the discharge space 12 can not In the conductive mode, the electric frequency current can pass only through the electromagnet to reach the other end and the moving iron core acts.This description contains only a few excellent embodiments of the invention but does not This does not limit the scope of the claim of the present invention, therefore any equivalent made in accordance with the claims of the invention is within the scope of the present invention.
    权利要求:
    Claims (9)
    [0001]
    REVENDICATIONS1. Miniature circuit breaker with parameters for blocking an electric frequency current, comprising a trigger mechanism (5), a movable contact (8) and a fixed contact (10), characterized in that it further comprises a current sensor (11) and an electromagnet (2), the movable contact (8) and the fixed contact (10) being arranged on a main circuit of the miniature miniature circuit breaker, the electromagnet (2) comprises an electromagnet coil and a movable iron core. , the solenoid coil is connected to the current sensor (11), the triggering mechanism (5) is connected to the movable contact (8), during a displacement, the movable iron core collides with the triggering mechanism ( 5) and the state of contact of the movable contact (8) and the fixed contact (10) switches to the separation state while the triggering mechanism (5) terminates the trip.
    [0002]
    2. Miniature circuit breaker with parameters for blocking an electric frequency current according to claim 1, characterized in that the triggering period of the trigger mechanism (5) is not less than 5 ms, the duration during which the current of lightning crosses the main circuit is less than the tripping period of the triggering mechanism (5) and the duration during which the electric current flows through the main circuit is greater than the tripping period of the triggering mechanism (5).
    [0003]
    3. Miniature circuit breaker with parameters for blocking an electric frequency current according to claim 1 or 2, characterized in that the electromagnet (2) further comprises a return spring for causing the return of the movable iron core to the position at which it was before acting after the action of the mobile iron core.
    [0004]
    4. Miniature circuit breaker with parameters for blocking an electric frequency current according to any one of claims 1 to 3, characterized in that it further comprises an operating mechanism (4), an incoming wire terminal (1), a flexible copper wire (7), an outgoing wire terminal (6), an operating key (3) and an arc extinguishing device, the movable contact (8) being connected to the wire terminal outgoing (6) through the flexible copper wire (7), the start key (3) is connected with the triggering mechanism (5) through the operating mechanism (4) and the extinguishing device arc sensor comprises an arc drop sheet (9) for extinguishing an arc generated between the fixed contact (10) and the movable contact (8).
    [0005]
    5. Miniature circuit breaker with parameters for blocking an electric frequency current, comprising a trigger mechanism (5), a movable contact (8) and a fixed contact (10), characterized in that it further comprises a discharge space (12) and an electromagnet (2), the electromagnet (2) comprising an electromagnet coil and a movable iron core, the movable contact (8), the stationary contact (10) and the electromagnet coil being arranged on a main circuit of the miniature miniature circuit breaker, the discharge space (12) being connected in parallel to both ends of the solenoid coil, the triggering mechanism (5) being connected to the movable contact (8), when moving, the movable iron core collides with the triggering mechanism (5) and the state of contact of the movable contact (8) and the fixed contact (10) changes to the separation state when the triggering mechanism (5) ) completes the trigger.
    [0006]
    A miniature circuit breaker with parameters for blocking an electric frequency current according to claim 5, characterized in that the breaking voltage of the discharge space (12) is less than the induced voltage generated at both ends of the coil of electromagnet of the lightning current and the breaking voltage of the discharge space (12) is greater than the voltage induced at both ends of the electromagnet coil of the electric frequency current. 30
    [0007]
    7. Miniature circuit breaker with parameters for blocking an electric frequency current according to claim 5 or 6, characterized in that the triggering period of the triggering mechanism (5) is not less than 5 ms, the period during which the current the discharge gap (12) is less than the triggering period of the triggering mechanism (5) and the time during which the electric frequency current passes through the solenoid coil is greater than the triggering period of the triggering mechanism (5). 5
    [0008]
    8. Miniature circuit breaker with parameters for blocking an electric frequency current according to claim 5 or 7, characterized in that the electromagnet (2) further comprises a return spring for causing the return of the movable iron core to the position to which it was before acting after the action of the mobile iron core. 10
    [0009]
    9. Miniature circuit breaker with parameters for blocking an electric frequency current according to any one of claims 5 to 8, characterized in that it further comprises an operating mechanism (4), an incoming wire terminal (1), a flexible copper wire (7), an outgoing wire terminal (6), an operating key (3) and an arc extinguishing device, the movable contact (8) being connected to the outgoing wire terminal (6) through the flexible copper wire (7), the start key (3) is connected with the triggering mechanism (5) through the operating mechanism (4) and the extinguishing device arc comprises an arc drop sheet (9) for extinguishing an arc generated between the fixed contact (10) and the movable contact (8).
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    FR3025050B3|2016-09-30|
    DE202015104336U1|2015-09-01|
    CN104157521A|2014-11-19|
    WO2016026210A1|2016-02-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH07245044A|1994-03-04|1995-09-19|Meidensha Corp|Automatic trip device of breaker|
    JP4096668B2|2002-09-06|2008-06-04|三菱電機株式会社|Circuit breaker|
    KR100823144B1|2006-03-29|2008-04-21|새턴정보통신|Circuits Breaker having resetting function and breaking function for abnormal current|
    CN101677049B|2008-09-19|2011-12-28|郑春开|Improved circuit breaker|
    CN101882544A|2010-06-10|2010-11-10|厦门大恒科技有限公司|Air switch with functions of delayed releasing and automatic reclosing|
    CN102568966B|2010-12-16|2016-01-06|上海明科电气有限公司|Back-up surge protection breaker|
    CN102184808A|2011-05-05|2011-09-14|厦门大恒科技有限公司|Electromagnet with current separation channel|
    CN202231303U|2011-09-14|2012-05-23|成都兴业雷安电子有限公司|Novel pressure-sensitive protection switch|
    CN202796773U|2012-07-17|2013-03-13|深圳市中电电器有限公司|Novel anti-lightning impulse hydraulic and electromagnetic breaker|
    CN203289067U|2012-12-05|2013-11-13|孙巍巍|Novel surge protector|CN104682367A|2015-01-27|2015-06-03|中国石油化工股份有限公司|Novel thunder and lightning circuit breaker|
    CN104767193B|2015-03-11|2018-07-13|厦门大恒科技有限公司|A kind of current control component|
    CN106329507B|2016-10-15|2018-08-24|浙江雷源电气有限公司|A kind of SCB back-up protections device and its control method|
    CN107248486B|2017-08-09|2019-10-11|南京云凯防雷科技股份有限公司|A kind of back-up protection device of novel big through-flow releasing structure|
    CN107833813A|2017-12-11|2018-03-23|宏秀电气有限公司|A kind of Anti-surging breaker|
    法律状态:
    2016-08-18| PLFP| Fee payment|Year of fee payment: 2 |
    2017-08-28| PLFP| Fee payment|Year of fee payment: 3 |
    2018-06-27| PLFP| Fee payment|Year of fee payment: 4 |
    2019-07-18| PLFP| Fee payment|Year of fee payment: 5 |
    2020-07-06| PLFP| Fee payment|Year of fee payment: 6 |
    2021-07-08| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201410408059.4A|CN104157521A|2014-08-19|2014-08-19|Parameter miniature circuit breakers capable of blocking power frequency currents|
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